Publish Unpackaged Apps Error(Project Reference MAUI Library )

[bflyman]

Description

I created a MAUI APP using the following command and the resulting EXE works just fine.
dotnet publish -f net6.0-windows10.0.22621.0 -p:WindowsPackageType=None -p:SelfContained=true -p:WindowsAppSDKSelfContained=true -p:GenerateAppxPackageOnBuild=false
But when I created a MAUI Libaray and referenced it in my APP project, the above publish command failed

The main error messages are:
Could not find a part of the path 'J:\TestProject\MauiLib2\obj\Debug\net6.0-windows10.0.19041.0\MsixContent\AppxManifest.xml'. [J:\TestProject\MauiLib2\MauiLib2.csproj]

Steps to Reproduce

1.create Maui APP
2.create Maui Lib
3. APP Project Reference Lib
4. App MainPage.cs Add a little code
Lib.Class1 c = new Lib.Class1();
builder.Services.AddSingleton(c);

PS:The generation succeeds without adding code.

Version with bug

6.0.400

Last version that worked well

6.0.400

Affected platforms

Windows

Affected platform versions

Windows

Did you find any workaround?

pack Maui libaray and add package the libaray

Relevant log output

 C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018: “GenerateWinRTManifestFromAppx”任务意外失败。 [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018: System.IO.DirectoryNotFoundException: Could not find a part of the path 'J:\TestProject\MauiLib2\obj\Debug\net6.0-windows10.0.19041.0\MsixContent\AppxManifest.xml'. [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at Microsoft.Win32.SafeHandles.SafeFileHandle.CreateFile(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at Microsoft.Win32.SafeHandles.SafeFileHandle.Open(String fullPath, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.IO.Strategies.OSFileStreamStrategy..ctor(String path, FileMode mode, FileAccess access, FileShare share, FileOptions options, Int64 preallocationSize) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.IO.Strategies.FileStreamHelpers.ChooseStrategy(FileStream fileStream, String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, FileOptions options, Int64 preallocationSize) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.Xml.XmlDownloadManager.GetStream(Uri uri, ICredentials credentials, IWebProxy proxy) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.Xml.XmlUrlResolver.GetEntity(Uri absoluteUri, String role, Type ofObjectToReturn) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.Xml.XmlTextReaderImpl.OpenUrl() [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.Xml.XmlTextReaderImpl.Read() [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.Xml.XmlDocument.Load(XmlReader reader) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at System.Xml.XmlDocument.Load(String filename) [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at InlineCode.GenerateWinRTManifestFromAppx.Execute() [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute() [J:\TestProject\MauiLib2\MauiLib2.csproj]
C:\Users\bflyman\.nuget\packages\microsoft.windowsappsdk\1.1.1\buildTransitive\Microsoft.WindowsAppSDK.SelfContained.targets(239,5): error MSB4018:    at Microsoft.Build.BackEnd.TaskBuilder.ExecuteInstantiatedTask(ITaskExecutionHost taskExecutionHost, TaskLoggingContext taskLoggingContext, TaskHost taskHost, ItemBucket bucket, TaskExecutionMode howToExecuteTask) [J:\TestProject\MauiLib2\MauiLib2.csproj]

VS bug #1759006

[wulf11]

Can confirm the problems. Updated my Visual Studio 2022 to Version 17.6.2 and now my .NET 7 MAUI Blazor application can't publish with -p:WindowsAppSDKSelfContained=true. The problems occus when a class library project is added and referenced.

[wulf11]

Hey guys I may found a workaround that I want to share with you.
It seems that the WindowsAppSDKSelfContained requires an "AppxManifest.xml" from a folder called MsixContent. These files are not created for the MAUI library projects for some reason. I am not quite sure which side is responsible for this (team MAUI or team WindowsAppSDK). But here is a quick guide how I could resolve the issues (for several projects I have):

1. clean up the solution (delete bin and obj folder of each if necessary)
2. rebuild solution
3. execute build via Powershell

dotnet build

4. dotnet publish -c Release -f net7.0-windows10.0.19041.0 -p:WindowsPackageType=None -p:SelfContained=true
5. navigate to the start project (main project) with the file explorer:

/obj/Release/net7.0-windowsxxxxx/win10-x64/MsixContent/

6. copy AppxManifest.xml

7. navigate with the file explorer to the library project (MAUI library or side project)

/obj/Release/net7.0-windowsxxxxx/win10-x64/

8. create here the missing folder MsixContent
9. insert the AppxManifest.xml
10. dotnet publish -c Release -f net7.0-windows10.0.19041.0 -p:WindowsPackageType=None -p:SelfContained=true -p:WindowsAppSDKSelfContained=true

Well you got the idea..you need to provide an AppxManifest.xml. Not quite sure if its a problem if I just copy it from the "main" project to the other solutions, but it worked for me so far.

I hope that may give some hints for the devs to find the bug.

[mattleibow]

I believe this is fixed for apps. But the real issue is that publishing only works if you pass the project and not a solution. It will try publish the library project as an app, which is not supported.

This is an old issue, but did you manage to publish the app?

[ghost]

Hi @bflyman. We have added the "s/needs-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[ghost]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.

[wulf11]

Lets say I have a solution that contains a "main" project and a library project. It would fail in both scenarios when the main project references the library project. The error occured randomely, but I could always resolve it with a copy of AppxManifest.xml.

So yes app publishing works, but only if you know what you are doing.

[mattleibow]

I am pretty sure there is an authoring issue in the WinUI targets. If you set the <WindowsAppSDKSelfContained> property in the csproj then for some reason the library works again.

I think this is the same issue where setting the RuntimeIdentifier on the CLI tries to make library projects into apps. microsoft/WindowsAppSDK#3337

To work around this I have to add this to csprojs that want a RID-specific build:

<PropertyGroup Condition="'$(RuntimeIdentifierOverride)' != ''">
	<RuntimeIdentifier>$(RuntimeIdentifierOverride)</RuntimeIdentifier>
</PropertyGroup>

This could then be replicated and used to set the property on the CLI:

<PropertyGroup Condition="'$(WindowsAppSDKSelfContainedOverride)' != ''">
	<WindowsAppSDKSelfContained>$(WindowsAppSDKSelfContainedOverride)</WindowsAppSDKSelfContained>
</PropertyGroup>

It is unfortunate, but there seems to be an ordering issue where setting properties trigger targets to do things even when they are not relevant for the project.

I logged another issue on this as well: microsoft/WindowsAppSDK#4008

So, as a workaround for now, you can:

• add the WindowsAppSDKSelfContained property to the csproj
• add the snippet above and set the ovveride on the CLI
• use net8 which automatically sets the self contained to true and thus you do not have to

[ghost]

Hi @bflyman. We have added the "s/needs-info" label to this issue, which indicates that we have an open question for you before we can take further action. This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.

[ghost]

This issue has been automatically marked as stale because it has been marked as requiring author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. If it is closed, feel free to comment when you are able to provide the additional information and we will re-investigate.